7987plumbing systemsTTen-USVocabulário Colaborativo em Artes e Arquitetura active approved plumbing systemsThe systems within a building that supply water to the occupants and carry off liquid or liquid-suspended wastes; includes pipes, traps, vents, and fixtures, but not sources or destinations outside the building such as wells or septic tanks.

Source: Art and Architecture Thesaurus
http://vocab.getty.edu/page/aat/300078157

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